Method and apparatus for composting organic material
a technology of organic material and composting method, which is applied in the direction of biochemistry apparatus, biochemistry apparatus and processes, applications, etc., can solve the problems of difficult control, organic material composting heterogeneously, and the composting process continues for a relatively long time, and achieves simple and economical manufacturing, reliable and profitable, and simple
Inactive Publication Date: 2006-08-15
MATTI SAASTAMOINEN
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Benefits of technology
"The invention provides a method and device for composting organic material that can promote faster and more homogeneous composting compared to previous methods. The method involves transporting organic material upwards and dropping it downwards, which allows for better mixing and oxygen and moisture supply. The device includes a mixing transporting device and a spreading element to facilitate the composting process. The method and device can manage the verification of the composting process easily and reliably. Additionally, the invention allows for the adjustment of moisture content and acidity of the organic material, as well as the control of the supply of oxygen and moisture to all particles of the material. The device is simple, profitable, and can be easily installed and maintained."
Problems solved by technology
Current composting methods are functional as such but the composting process continues for a relatively long period of time while employing them (usually several weeks) and is difficult to be controlled.
Furthermore, while using currently known composting methods organic material composts heterogeneously and the proceeding of the stages of the process and the hygienesation may not be verified.
Furthermore, there is, for example, a bad odour control in current composting methods and in special cases actual health hazards are caused to those working in connection with a composter.
Method used
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[0019]The device in FIGS. 1 and 2 includes a turnable, in inclined position on a suitable base attached bioreactor 1. It is a reservoir-like apparatus, which has been constructed from a conical part 10 closed with a vertical wall in the narrow end and a hemispherical end wall 11 functioning as a turning element and placed in the wider end. Both parts are, in this case, manufactured of a stainless Steel plate, which has been insulated on the outer surface with, for example, polyurethane. There is a bottom part 7 in the lower part of the bioreactor, a part of which is an emptying opening 17 with openable emptying hatches 8 and 9. There is a transporter 2 mixing material and constructed from screws 3–6 placed near the bottom part in the lower part of the bioreactor. The inside of the bioreactor has been divided into a composting part 14 and a cleaning part 15 with a separating wall 16. For filling the composting part 14 with organic material there is a filling opening 12 of the compost...
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Abstract
The present invention relates to a method for composting organic material, in which method organic material is transported to a bioreactor (1) where it is mixed and where material for regulating the oxygen content and bacteria and / or enzymes for agitation of composting process are added to it, and where organic material may compost, after which the composted material is removed outside the bioreactor to be stabilized. The invention also relates to a device for composting organic material, which device includes a bioreactor (1) with at least one filling and emptying opening (12, 13, 17) in order to fill and empty the bioreactor, and a transporting device (2) mixing the material inside the bioreactor (1) in order to transport the organic material to be composted and a mix it inside the bioreactor. Characteristic to the method in accordance with the invention is that organic material is transported by means of a mixing transporting device (2) upwards and then dropped down against a spreading element (16) and from there back to the transporting device thus spreading the organic material to a smaller particle size and the particles while falling down come into contact with oxygen and moisture of the air in the bioreactor (1). Characteristics to the device in accordance with the invention is that the bioreactor (1) includes a turning element (11) to direct the organic material to be transported with a transporting device (2) upwards and back to mainly opposite direction in respect with the transporting direction of the transporting device.
Description
FIELD OF THE INVENTION[0001]The present invention relates to a method for composting organic material, in which method organic material is transported to a bioreactor where it is mixed and where material for regulating the oxygen content and bacteria and / or enzymes for agitation of composting process are added to it, and where organic material may compost, after which the composted material is removed outside the bioreactor to be stabilized. The invention also relates to a device for composting organic material, which includes a bioreactor with at least one filling and emptying opening in order to fill and empty the bioreactor and a mixing transporting device mixing the material inside the bioreactor in order to transport the organic material to be composted and to mix it inside the bioreactor.BACKGROUND OF THE INVENTION[0002]There are various methods today for composting organic material, such as biowaste and biomass and various devices to be employed while using them. Such devices...
Claims
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IPC IPC(8): C12M1/02B09B3/00C05F9/02C05F11/00C05F17/00C05F17/02
CPCC05F17/02Y02P20/145C05F17/90Y02W30/40
Inventor ROSTROM, CLAUS
Owner MATTI SAASTAMOINEN